作　　者： ; ;

机构地区： 北京科技大学材料科学与工程学院材料物理与化学系

出　　处： 《无机材料学报》 1994年第1期24-26,共3页

摘　　要： 本文首次报道了ＢａＦＣ１：Ｅｕ２＋，Ｅｕ３＋的光激励发光．实验结果发现；在ＢａＦＣ１：Ｅｕ中Ｅｕ３＋对Ｅｕ２＋的光激励发光有增强作用．在ＢａＦＣ１：Ｅｕ的光致发射光谱中同时观察到对Ｅｕ２＋、Ｅｕ３＋及基质的本征发射，而光激励发射光谱中只观察到Ｅｕ２＋的发射，表明光致发光与光激励发光存在着很大的差异．这些结果表明，发光中心Ｅｕ２＋、Ｅｕ３＋及基质之间存在着相互作用和能量传递．本文提出了一个“协同光激励发光模型”，能较好地解释实验观察到的发光现象． The photostimulated luminescence of BaFC1:Eu2+, Eu3+ is reported for the first time in this paper.Experimental results show that the photostimulated luminescence(PSL) of Eu2+ might be enhanced by Eu3+ in BaFC1:Eu. Emission of Eu2+, Eu3+ and host could be observed in the photoluminescence(PL)spectra of BaFC1;Eu, however only the emission of Eu2+ could be observed in the PSL spectra of BaFC1:Eu which means that much difference existed between PL and PSL. The above facts denote that there must happen some interaction and transformation among Eu2+, Eu3+ and host. A M Cooperative photostimulated Luminescence model' proposed here can be used to explain those phenomena reasonably.

关 键 词： 光致发光 铕 氟化物

领　　域： [理学] [理学]